 #include<bits/stdc++.h>
 using namespace std;
 int main(){
	freopen("arena,in","r",stdin);
	freopen("arena,out","w",stdout);
	cout<<5<<endl;
	cout<<19<<endl;
	cout<<7<<endl;
	cout<<1<<endl;
	fclose(stdin);
	fclose(stdout);
	return 0;
 }
